Improvement in fluid-meters



NJETERS, FHOTWLITHOGRAPMER. WASHINGTON, mc.

N PETERS. PHDTO-LITHOGRAPHER, WASHINGTON. D CA UNITED STATES 'PATENTOFFICE.

EnANzrs WAGNER, 0F NEW roem N. Y.

IMPROVEMENT IN FLUID-METERS.

i Specification forming part of Letters Patent N o. "109,359, datedNovember 15, 1870;

To all whom it may concern:

l Be it known that I, FnA-Nzrs WAGNER, of the city, county, and State ofNew York, have invented a new and useful Improvement in Fluid-Meters;andl I do hereby declare the following to be a full, clear, and; exactdescription thereof, which will enable those skilled `in the art to makeand use the same, refer-` ence being had to the accompanying drawing,forming part ot this specification, inwhich drawing- Y Figure lrepresents a vertical central section ofthis invention With the valvemechanism. Fig. 2 is a horizontal section of the same, showing valvemechanism and its connection with the registering apparatus. Fig. 3 is avertical central section oi" the apparatus with out the valve. Fig. 4 isa horizontal section of the same without the valve. Fig. 5 is atransverse section of the same with the valve mechanism. Fig. 6 is atransverse section of the piston-valve detached.

Similar letters indicate corresponding parts.

This invention relates to a single piston meter, the Valve of whichreceives a reciprocating motion by the action of the liquid to bemeasured, and a partially-revolving motion by the action of thepiston ofthe measuringcylinder, in such a manner that a valve mechanism for asingle piston-meter is obtained in which the use of springs or weightsis dispensed with, and the motion of which depends entirely upon theaction of the liquid to be measured.

In the drawing, the letter A designates the measuring-cylinder, which istted with a piston, B, and which communicates through ports a b with thecylindrical valve-chamber C. This valve-chamber communicates with theport c through the port ai, (see Figs. 2 and 4,) and with the port bthrough the port bi", the ports a and b leading into themeasuring-cylinder being separated from each other by partitions c. Thevalve'chamber communicates by an aperture, d, with the supplypipe, andby an aperture, e, with the discharge-pipe of the meter; and the liquid,on passing in through the supply-aperture d, fills a space, f, which issituated between the two pistonvalves D D', which occupy thevalve-chamber, and are connected together by a V-shaped partition, g g',on one, and by a bar, h, on the opposite `1,) and'these portscommunicate both with the'space l, between the V-shaped partition gg;(SeeFig. 6.) Through the Valve-chamber] near one end ot' the same,extends a rod, m, which forms aI guide i'or a slide, n, which isprovided with two lips, o o', the lip o to catch below a nut,p, securedto thev end of the main piston-rod q, while the lip o is at such adistance from the lip o that the main piston has to travel over a largeportion oi its stroke before the slide n is moved. Said slide isprovided with a notch, r, which straddles the connecting-bar h of thetwo piston-valves. (See Fig. 5.)

The action of the meter is as follows: If the position of thepiston-valves and of the main piston is that shown in Figs.`l and 2, thesupply-opening d communicates with the spacef between the piston-valves,and the fluid passes through the ports a* and a into the upper part ofthe measuring-cylinder, and the main piston B is forced down. The lowerpart of the measuring-cylinder communicates, through the ports b andbit, with the port lc in the piston-valve D', and, through this port,with the space l between the V-shaped partition g g', and with the porti and discharge-opening c. As the main piston is forced down, therefore,the iuid in the lower part of the measuringcylinder discharges. At thesame time the ports t2 and of the valve-chamber are in communicationwith the supply-opening d, while the ports 1 communicate with thedischarge-opening c. When the main piston approaches the lower end ofits stroke, the slide n imparts to the piston-valves apartially-revolving motion, whereby the ports l i* are brought incommunication with the space f and supply-opening d, and the ports 112tit* with the discharge-opening e. The fluid, therefore, presses on theouter end of the pistonvalve D, and forces the same in the directiontween the measuring mechanism and the registering apparatus.

From the slide n projects a stud, s, which catches in a slotted lever,t, secured to the inner end of a rock-shaft, u. On the outer end ofthisrock-shaft is mounted a lever, fu, which carries a pawl, w, that engageswith the teeth of a ratchet-wheel, w. Astop-pawl, y, prevents thisratchet-wheel from turning in the wrong direction. By these means theratchet-Wheel mis propelled, one tooth for each double'stroke of themain piston, and the moc tion of the ratchet-wheel is communicated, bysuitable gear-wheels, to the registering mechanism, which is inclosed ina case secured to the side of the valve-chamber.

It is obvious that, in this fluid-meter, the supply and dischargeopening can be changedthat is to say, either of the openings d and e canbe used as the supply or as the discharge opening without changing theresult.

What I claim as new, and desire to secure by Letters Patent, is-

1. The arrangement of piston-valves, having a reciprocating motionimparted to them by the direct action of the uid to be measured, and apartially-revolving motion imparted to them by the action of the fluidto be measured on the main piston in the measuringcylinder,substantially as herein shown and described.

2. The piston-valves D D', provided with ports j k, and a V-shapedspace, Z, in combination with ports i il i? i* 72H', inlet and outletopenings d e, ports a* b* a b, and a measuringi cylinder, A, allsubstantially as herein set forth.

3. The slide n, in combination with the main piston B and with thepiston-valves D D', substantially as described.

4. The lever t, rock-shaft u, lever fv, pawl w, and ratchet-wheel x, incombination with the slide n and piston B, substantially as set forth.

This lspecification signed by me this 30th day of April, 1870.

FRANZIS WAGNER.

Witnesses z W. HAUFF, C. WAHLERs.

